[Flash/Browser] Kasumi: Rebirth

No download required to play this, just a browser game. It is not complete here, you'll have to pay for the full version, but this is the older version. It's fun enough and is a neat game.
As you can likely gather from the link, it is a touching sim.. Basically, you are given a girl bond and get to play with her, which can be anything from fondling to raping. This version allows vaginal sex only (unless you count chest or "tit-style") and there is no sound, but it's free.